Question

решите плиз 2/7+1/3-1/4

Answer 1

2/7+1/3-1/4=13/21-1/4=31/84

Answer 2

$frac{2}{7} + frac{1}{3} - frac{1}{4} = frac{31}{84}$

1) $frac{2}{7} + frac{1}{3} = frac{6}{21} + frac{7}{21} = frac{13}{21}$

НОЗ: 21.

2) $frac{13}{21} - frac{1}{4} = frac{52}{84} - frac{21}{84} = frac{31}{84}$

НОЗ: 84.